package com.example.helloworld;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toast toast=Toast.makeText(MainActivity.this, "20175212童皓桢",Toast.LENGTH_LONG);
          toast.show();

    }
}
